gphoto-devel

[gphoto-devel] --capture-image failing with Canon 300D

[Poul J. <fly...@gf...>]

When using --capture-image with -I -F options to shoot multiple frames, 
download of the second image fails with error messages "File not found", 
"Buggy libcanon.so?". Debug log attached.

Any help highly appreciated.

Thank you,

Poul Jensen

Re: [gphoto-devel] --capture-image failing with Canon 300D

[Poul J. <fly...@gf...>]

Paul Walmsley wrote:
> On Mon, 23 Oct 2006, Poul Jensen wrote:
>
>> When using --capture-image with -I -F options to shoot multiple 
>> frames, download of the second image fails with error messages "File 
>> not found", "Buggy libcanon.so?". Debug log attached.
>
> Can you shoot single frames successfully?
>
> - Paul
Yes. Single frames shoot just fine and also download fine, as does the 
first frame of a sequence. Downloading multiple images with 
--get-all-files works fine too. But when capturing and downloading 2 (or 
more) images with the command --capture-image -I <interval> -F <# 
frames>, download of the second image fails. Seemingly the path to the 
file gets corrupted somehow. This happens on Ubuntu 6.06 and also on 
pdaXrom (ARM linux based OS) and with different CF cards. Here's what I 
think is the interesting part of the debug log (attached with previous 
post):

<Initializing download of first image - successfully>

2.692945 canon/canon.c(2): Entering directory ".\268CANON"
2.692982 canon/canon.c(2):  old entry "268CANON", attr = 0x10, size=0
2.693018 canon/canon.c(2):  new entry "IMG_6851.JPG", attr = 0x20, 
size=510502
2.693055 canon/canon.c(2): Found mismatch
2.693091 canon/util.c(2): is_image(IMG_6851.JPG) == 1
2.693127 canon/canon.c(2):   Found our new image file
2.693171 canon/canon.c(3): canon2gphotopath: converted 
'C:\DCIM\268CANON' to '/DCIM/268CANON'
2.693240 main(2): Getting 'IMG_6851.JPG'...
2.693303 gphoto2-camera(2): Getting file 'IMG_6851.JPG' in folder 
'/DCIM/268CANON'...
2.693353 libgphoto2/gphoto2-filesys.c(2): Getting file 'IMG_6851.JPG' 
from folder '/DCIM/268CANON' (type 1)...
2.693415 gphoto2-filesystem(2): Folder / is dirty. Listing file in there 
to make folder clean...
2.694143 gphoto2-filesystem(2): Listing folders in '/'...
2.694239 canon/library.c(2): folder_list_func()
2.694277 canon/library.c(2): check_readiness() cached_ready == 0
2.694314 canon/canon.c(2): canon_int_ready()
2.694351 canon/usb.c(2): canon_usb_ready()
2.694390 canon/usb.c(2): canon_usb_dialogue() cmd 0x1 0x12 0x201 
(Identify camera)
2.694441 gphoto2-port(2): Writing message (request=0x4 value=0x10 
index=0x0 size=80=0x50)...
2.694489 gphoto2-port(3): Hexdump of 80 = 0x50 bytes follows:

<snip>

<Initializing download of 2nd image - failure>

12.426203 canon/canon.c(2): Entering directory ".\268CANON"
12.426242 canon/canon.c(2):  old entry "268CANON", attr = 0x10, size=0
12.426281 canon/canon.c(2):  new entry "IMG_6852.JPG", attr = 0x20, 
size=510260
12.426321 canon/canon.c(2): Found mismatch
12.426359 canon/util.c(2): is_image(IMG_6852.JPG) == 1
12.426398 canon/canon.c(2):   Found our new image file
12.426437 canon/canon.c(3): canon2gphotopath: converted 
'C:\DCIM\268CANON' to '/DCIM/268CANON'
12.426488 main(2): Getting 'IMG_6852.JPG'...
12.426534 gphoto2-camera(2): Getting file 'IMG_6852.JPG' in folder 
'/DCIM/268CANON'...
12.426576 libgphoto2/gphoto2-filesys.c(2): Getting file 'IMG_6852.JPG' 
from folder '/DCIM/268CANON' (type 1)...
12.427313 context(0): File 'IMG_6852.JPG' could not be found in folder 
'/DCIM/268CANON'.

*** Error ***             
File 'IMG_6852.JPG' could not be found in folder '/DCIM/268CANON'.
12.427491 libgphoto2/gphoto2-filesys.c(2): Download of 'IMG_6852.JPG' 
from '/DCIM/268CANON' (type 1) failed. Reason: 'File not found'
12.427535 gphoto2-camera(2): Operation failed!
ERROR: Could not get image.
ERROR: Buggy libcanon.so?
*** Error (-108: 'File not found') ***      

Re: [gphoto-devel] --capture-image failing with Canon 300D

[Poul J. <fly...@gf...>]

The list of files in the camera folder never updates. Or rather, it 
updates once after the first image capture because the folder is 
initialized with flag files_dirty=1, triggering an update in function 
gp_filesystem_number (libgphoto2/gphoto2-filesys.c). The update sets 
files_dirty=0 and then the file list never updates again, causing 
failure because the next image can't be found. After an image capture 
with the 300D, where in the code is the folder (p.camera->fs->folder[x]) 
supposed to get updated with the new image? I can find the function that 
does it (canon_int_list_directory), but it is hard to tell where it is 
supposed to be called from, Can anybody provide me with a backtrace?

Thank you,

Poul Jensen